A heating system for accommodation areas based on distilled waste steam

Abstract

The present invention relates to the technical field of centralized heating in accommodation areas, and specifically to an accommodation area heating system based on distilled exhaust steam. The accommodation area heating system includes a first heat exchanger, a second heat exchanger, a water supply tank, a high-temperature water tank, and a radiator located in the accommodation area; the distilled exhaust steam is connected to the hot fluid inlet of the first heat exchanger, and is connected to the hot fluid inlet of the second heat exchanger after flowing out of the hot fluid outlet of the first heat exchanger; the cold fluid inlet of the first heat exchanger is connected to the water supply tank, and the cold fluid outlet is connected to the high-temperature water tank; the cold fluid outlet of the second heat exchanger is connected to the water inlet of the radiator through a heating pipe, and the cold fluid inlet is connected to the water outlet of the radiator; the radiator is used to heat the accommodation area. The accommodation area heating system fully recycles and utilizes the heat energy contained in the distilled exhaust steam through multi-stage recycling and utilization, thereby saving energy.

Description

Technical Field

[0001] The present invention relates to the technical field of centralized heating in accommodation areas, and in particular to an accommodation area heating system based on distilled and discharged waste steam. Background Art

[0002] In many industries (such as brewing, papermaking, sugar making, textiles, etc.), the production process in the factory will generate a large amount of high-temperature steam. This high-temperature steam contains a large amount of thermal energy. If it is directly discharged into the environment, it will cause a large amount of heat energy loss, resulting in energy waste. It will also cause the temperature near the factory to be too high, damaging the ecological environment around the factory.

[0003] In the liquor distillation process, high-temperature waste steam is primarily generated during the acid removal or grain steaming process, which continues after the final liquor is distilled. This process continuously emits large amounts of high-temperature steam. This high-temperature waste steam typically contains fermentation products such as various acids and aldehydes, as well as dust particles. If discharged directly, this waste steam forms condensate above the workshop and falls back onto the mash on the floor, where it is being spread out for drying, piled up for saccharification, and other processes. This contamination directly impacts the quality of the liquor. Furthermore, the acidic substances in the condensate can exacerbate corrosion and aging of the plant and equipment.

[0004] In the existing technology, the high-temperature steam produced in the factory area is usually recovered in a centralized manner, and the heat energy contained in the high-temperature steam is recovered through heat exchange equipment and used for purposes such as heating the accommodation area.

[0005] However, existing waste steam-based heat recovery heating systems are usually single-stage recovery with low heat recovery efficiency. Summary of the Invention

[0006] The purpose of the present invention is to provide a heating system for accommodation areas based on distilled waste steam, which fully recycles and utilizes the heat energy contained in the distilled waste steam through multi-stage recovery and utilization, thereby saving energy.

[0007] The present invention provides a heating system for an accommodation area based on distilled exhaust steam, wherein the distilled exhaust steam comes from a distillation processing system in a factory area; the heating system for the accommodation area comprises a first heat exchanger, a second heat exchanger, a water supply tank, a high-temperature water tank and a radiator located in the factory area; the distilled exhaust steam is connected to the hot fluid inlet of the first heat exchanger, flows out from the hot fluid outlet of the first heat exchanger and is connected to the hot fluid inlet of the second heat exchanger; the cold fluid inlet of the first heat exchanger is connected to the water supply tank, and the cold fluid outlet is connected to the high-temperature water tank; the cold fluid outlet of the second heat exchanger is connected to the water inlet of the radiator through a heating pipe, and the cold fluid inlet is connected to the water outlet of the radiator; the radiator is used to provide heating to the accommodation area.

[0008] Furthermore, the accommodation area heating system also includes a water softener, which is used to soften natural water to obtain soft water and input it into the water supply pool; the cold fluid in the second heat exchanger is soft water.

[0009] Furthermore, a shower room is provided in the accommodation area, and a four-way valve is provided in the shower room, the four-way valve including a first interface, a second interface, a third interface and a fourth interface; the water outlet is connected to the first interface, the second interface is connected to the cold fluid inlet of the second heat exchanger; the water supply tank is connected to the third interface, and the fourth interface is connected to the shower head; by operating the valve stem of the four-way valve, the four-way valve can be switched between a first state and a second state; in the first state, the first interface is connected to the second interface, and the third interface and the fourth interface are closed; in the second state, the first interface is connected to the fourth interface, and the second interface is connected to the third interface.

[0010] Furthermore, a flow meter is provided on the pipeline connecting the water supply tank to the third interface, a variable frequency pump is also connected to the pipeline connecting the first heat exchanger to the water supply tank, a water pump is connected to the heating pipe, and a temperature sensor is provided in the water supply tank; the accommodation area heating system also includes a control terminal electrically connected to the flow meter, the variable frequency pump, and the temperature sensor; when the four-way valve is in the first state, the control terminal controls the variable frequency pump to supply soft water to the first heat exchanger at an initial flow rate; when the four-way valve is in the second state, the control terminal controls the variable frequency pump to supply soft water to the first heat exchanger at a second flow rate in response to the measurement result of the flow meter and the soft water temperature in the water supply tank detected by the temperature sensor.

[0011] Furthermore, the difference between the initial flow rate and the second flow rate is obtained according to the following method:

[0012] ,

[0013] in, ∆q is the difference between the initial flow rate and the second flow rate, q 1 is the measurement result of the flow meter, T 1 is the preset inflow temperature of the cold fluid inlet of the second heat exchanger, T 3 is the soft water temperature in the water supply tank, T 4 The preset outflow temperature of the cold fluid outlet of the first heat exchanger.

[0014] Furthermore, the hot fluid outlet of the first heat exchanger is lower than the hot fluid inlet, and the hot fluid outlet of the second heat exchanger is lower than the hot fluid inlet. Both ends of the pipeline connecting the hot fluid outlet of the first heat exchanger to the hot fluid inlet of the second heat exchanger gradually sink toward the middle, and a float valve is installed at the lowest point of the pipeline; the float valve includes a shell and a float, the float is slidably arranged in the shell in a vertical direction, and a drain outlet is provided at the bottom of the shell; when the float floats, the drain outlet is opened, and when the float sinks, the drain outlet is closed.

[0015] Furthermore, the accommodation area heating system also includes a condenser; the hot fluid outlet of the second heat exchanger and the drain outlet are both connected to the hot fluid pipe of the condenser; one end of the cold fluid channel of the condenser is connected to the water supply pool, and the other end is connected to the cold fluid inlet of the first heat exchanger.

[0016] Furthermore, an impeller is installed inside one end of the heating pipe close to the radiator, and the shaft of the impeller is perpendicular to the axis of the heating pipe and extends to the outside of the heating pipe; the radiator includes a fixedly installed bracket and a heat dissipation pipeline and fan blades rotatably installed on the bracket; the air outlet side of the fan blade faces the heat dissipation pipeline; the shaft and the rotating axis of the fan blade are parallel, and the shaft drives the fan blade to rotate through a chain drive.

[0017] Furthermore, the radiator further includes a dust cover fixedly connected to the bracket, and the fan blades are located between the dust cover and the heat dissipation pipeline.

[0018] Furthermore, the radiator also includes a back cover and a water filter; the back cover is fixedly connected to the bracket and is located on the suction side of the fan blade, the concave side of the back cover faces the fan blade, and a chamber is formed between the back cover and the fan blade; the water filter includes a filter housing and an air inlet pipe, water is contained in the filter housing, one end of the air inlet pipe is located outside the filter housing, and the other end passes through the wall of the filter housing and is inserted into the water; a connecting port is provided on the wall of the filter housing above the internal water level, and the side of the back cover away from the fan blade is connected to the connecting port through a connecting pipe.

[0019] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0020] 1. The embodiments of the present disclosure provide a heating system for an accommodation area based on exhaust steam from distillation. By sequentially passing the exhaust steam through a first heat exchanger and a second heat exchanger, the heat energy contained in the exhaust steam is utilized in multiple stages. The exhaust steam is fully exchanged and condensed in the two-stage heat exchanger to release heat energy, and then the heat energy contained in the exhaust steam can be utilized by air.

[0021] 2. In an accommodation area heating system based on distilled exhaust steam, embodiments of the present disclosure provide a system in which the hot water delivered to the radiator by the second heat exchanger is not only used for heating the accommodation area, but can also be used for bathing accommodation area employees after flowing out of the radiator's water outlet. Consequently, the water used for employee bathing does not need to flow back to the second heat exchanger, thereby avoiding heat loss during the return process. Accordingly, by controlling the variable frequency pump to adjust the flow rate of soft water supplied to the first heat exchanger, the outlet temperature of the second heat exchanger can be maintained at a preset temperature even when the hot water flowing out of the radiator's water outlet is used for employee bathing, thereby not affecting the heating effect of the accommodation area.

[0022] 3. The embodiment of the present disclosure provides a heating system for accommodation areas based on the distillation of exhaust steam. The water flow in the heating pipe drives the impeller to rotate, and then the rotating shaft drives the fan blades to rotate. There is no need to set up a circuit near the radiator. Compared with the traditional electric-driven fan used to blow the heat dissipation pipe, even if the radiator leaks, it will not cause a circuit short circuit or electric shock accident. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0024] Figure 1 A schematic diagram of the piping connections of a residential area heating system based on distilled exhaust steam according to an embodiment of the present invention;

[0025] Figure 2 A cross-sectional view of a four-way valve according to an embodiment of the present invention;

[0026] Figure 3 Based on Figure 1 A partial magnified view of the drawn area A;

[0027] Figure 4 A schematic diagram of the three-dimensional structure of a condenser drawn according to an embodiment of the present invention;

[0028] Figure 5 A schematic diagram of the three-dimensional structure of a radiator drawn according to an embodiment of the present invention;

[0029] Figure 6 Based on Figure 5 A partial magnified view of the drawn area B;

[0030] Figure 7 Based on Figure 5 A cross-sectional view of the radiator is drawn;

[0031] Figure 8 Another schematic diagram of the three-dimensional structure of a radiator according to an embodiment of the present invention;

[0032] Figure 9 This is a cross-sectional view of a water filter according to an embodiment of the present invention.

[0033] Markings and corresponding parts names in the accompanying drawings:

[0034] 11-distillation processing system; 12-first heat exchanger; 121-frequency conversion pump; 13-second heat exchanger; 131-heating pipe; 132-water pump; 14-water supply tank; 15-high-temperature water tank; 16-condenser; 161-hot fluid pipe; 162-cold fluid channel; 17-water softener; 2-radiator; 21-water inlet; 22-water outlet; 23-impeller; 24-shaft; 25-bracket; 26- Heat dissipation pipe; 27-fan blade; 28-dust cover; 29-back cover; 41-first interface; 42-second interface; 43-third interface; 44-fourth interface; 45-valve stem; 51-housing; 52-float; 53-drain outlet; 61-filter housing; 611-cover; 612-barrel; 62-inlet pipe; 63-connecting port; 64-connecting pipe; 71-sprocket; 72-chain; 73-air guide plate. DETAILED DESCRIPTION

[0035] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the examples and accompanying drawings. The exemplary embodiments of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention. It should be noted that the present invention is already in the actual development and use stage.

[0036] In many industries (such as brewing, papermaking, sugar making, textiles, etc.), the production process in the factory will generate a large amount of high-temperature steam. This high-temperature steam contains a large amount of thermal energy. If it is directly discharged into the environment, it will cause a large amount of heat energy loss, resulting in energy waste. It will also cause the temperature near the factory to be too high, damaging the ecological environment around the factory.

[0037] In the liquor distillation process, high-temperature waste steam is primarily generated during the acid removal or grain steaming process, which continues after the final liquor is distilled. This process continuously emits large amounts of high-temperature steam. This high-temperature waste steam typically contains fermentation products such as various acids and aldehydes, as well as dust particles. If discharged directly, this waste steam forms condensate above the workshop and falls back onto the mash on the floor, where it is being spread out for drying, piled up for saccharification, and other processes. This contamination directly impacts the quality of the liquor. Furthermore, the acidic substances in the condensate can exacerbate corrosion and aging of the plant and equipment.

[0038] In the existing technology, the high-temperature steam produced in the factory area is usually recovered in a centralized manner, and the heat energy contained in the high-temperature steam is recovered through heat exchange equipment and used for heating purposes such as accommodation areas (usually, after meeting the heating needs, there is still a large amount of surplus, and this surplus heat energy can be used to heat production water for washing raw materials, utensils, etc.).

[0039] However, existing waste steam-based heat recovery heating systems typically use a single-stage approach, resulting in low heat recovery efficiency and significant heat loss. Therefore, this embodiment provides a heating system for accommodation areas based on distillation waste steam. By performing multi-stage recovery and utilization of the heat energy contained in the waste steam generated by the liquor distillation process, this system achieves the goals of saving energy and preventing contamination of raw materials within the plant.

[0040] Example 1:

[0041] like Figure 1 As shown, this embodiment provides a heating system for an accommodation area based on exhaust steam from distillation, wherein the exhaust steam from distillation comes from a distillation processing system 11 in a factory area; the heating system for the accommodation area includes a first heat exchanger 12, a second heat exchanger 13, a water supply tank 14, a high-temperature water tank 15, and a radiator 2 in the accommodation area.

[0042] The waste steam discharged from the distillation is connected to the hot fluid inlet of the first heat exchanger 12, and then flows out from the hot fluid outlet of the first heat exchanger 12 and connected to the hot fluid inlet of the second heat exchanger 13;

[0043] The cold fluid inlet of the first heat exchanger 12 is connected to the water supply tank 14 , and the cold fluid outlet is connected to the high-temperature water tank 15 ;

[0044] The cold fluid outlet of the second heat exchanger 13 is connected to the water inlet 21 of the radiator 2 through the heating pipe 131, and the cold fluid inlet is connected to the water outlet 22 of the radiator 2;

[0045] The radiator 2 is used to provide heating to the accommodation area.

[0046] It should be understood that the flow rate of the distillation exhaust steam input to the first heat exchanger 12 is stable (for example, this is achieved by setting a pressure-stabilizing tank or a regulating valve on the pipeline from which the distillation exhaust steam is input to the first heat exchanger 12. The stabilization of the pipeline steam flow rate by setting a pressure-stabilizing tank or a regulating valve is existing technology and will not be repeated here).

[0047] Based on this, the accommodation area heating system based on distilled exhaust steam provided in this embodiment utilizes the heat energy contained in the waste steam in multiple stages by sequentially passing the waste steam through a first heat exchanger 12 and a second heat exchanger 13, allowing the waste steam to fully exchange heat and condense in the two-stage heat exchangers, releasing heat energy. The released heat energy can heat the cold fluid in the second heat exchanger 13 to a preset outlet temperature and then be discharged from the cold fluid outlet. After discharge, the heated cold fluid is transported to the radiator 2 of the accommodation area through the heating pipe 131 for heating the accommodation area. During the heating process, the heat energy is released (and the temperature of the heated cold fluid is reduced), and then it is transported back to the cold fluid inlet of the second heat exchanger 13 to be heated again.

[0048] It should be understood that for a given accommodation area, its heating demand is determined, which determines the thermal energy required by the heated cold fluid output by the second heat exchanger 13 upon reaching the accommodation area. To this end, the flow rate and outlet temperature of the heated cold fluid output by the second heat exchanger 13 are typically preset, thereby maintaining a constant temperature upon reaching the water inlet 21 of the radiator 2 and ensuring a constant thermal energy requirement for the second heat exchanger 13. Accordingly, by adjusting the cold fluid flow rate of the first heat exchanger 12, a portion of the exhaust steam condenses in the first heat exchanger 12, releasing heat, while the remaining portion is transported to the second heat exchanger 13 for condensation and heat release, thereby heating the cold fluid at the preset flow rate in the second heat exchanger 13 to a preset outlet temperature. Obviously, as the outside temperature changes, the heating demand of the accommodation area changes, and the flow rate and outlet temperature of the heated cold fluid output by the pre-set second heat exchanger 13 need to be adjusted accordingly, that is, the heat energy required by the second heat exchanger 13 is adjusted. To this end, the heat energy exchanged by the first heat exchanger 12 can be changed by adjusting the flow rate of the cold fluid in the first heat exchanger 12, so that the heat energy contained in the steam entering the second heat exchanger 13 matches the heat energy demand of the adjusted second heat exchanger 13.

[0049] Preferably, the outside of the heating pipe 131 that transports the cold fluid from the second heat exchanger 13 to the radiator 2 and the pipe that transports the cold fluid from the radiator 2 back to the second heat exchanger 13 are both covered with an insulation layer, thereby reducing the heat energy loss during the fluid transportation between the second heat exchanger 13 and the radiator 2.

[0050] Preferably, the outlet temperature of the cold fluid from the first heat exchanger 12 is greater than 95°C, and the outlet temperature of the cold fluid from the second heat exchanger 13 is between 60°C and 70°C. The high-temperature water output from the first heat exchanger 12 can be used to replenish the distillation pot, soak grain, and clean equipment. Using this high-temperature water heated to above 95°C to replenish the distillation pot water, as its temperature is close to its boiling point, avoids a sudden drop in the distillation pot water temperature compared to directly adding cold water. This promotes stable steam production from the distillation pot and reduces boiler load fluctuations caused by water replenishment.

[0051] Preferably, the accommodation area heating system further includes a water softener 17 , which is used to soften natural water to obtain soft water and input the soft water into the water supply pool 14 ; the cold fluid in the second heat exchanger 13 is soft water.

[0052] Accordingly, soft water is heated to above 95°C in the first heat exchanger 12 without generating scale, thereby avoiding the cold fluid pipeline of the first heat exchanger 12 from reducing the heat exchange efficiency or even clogging due to scaling, which is beneficial to maintaining the long-term stable operation of the system. In addition, the soft water heated to above 95°C is used to supplement the distillation bottom pot water, which can avoid scaling of the distillation processing system 11; similarly, although the cold fluid output temperature of the second heat exchanger 13 is relatively low, the cold fluid therein circulates between the second heat exchanger 13 and the radiator 2 for a long time and multiple times, and the cold fluid will be repeatedly heated by the second heat exchanger 13. Using soft water as the cold fluid in the second heat exchanger 13 will not generate scale even if it is heated multiple times.

[0053] Example 2:

[0054] like Figure 2 As shown, this embodiment is based on embodiment 1, except that, in this embodiment, a shower room is provided in the accommodation area, and a four-way valve is provided in the shower room. The four-way valve includes a first port 41, a second port 42, a third port 43, and a fourth port 44;

[0055] The water outlet 22 is connected to the first interface 41, the second interface 42 is connected to the cold fluid inlet of the second heat exchanger 13; the water supply tank 14 is connected to the third interface 43, and the fourth interface 44 is connected to the shower head;

[0056] By operating the valve stem 45 of the four-way valve, the four-way valve can be switched between the first state and the second state;

[0057] In the first state, the first interface 41 is connected to the second interface 42, and the third interface 43 and the fourth interface 44 are closed (eg, Figure 2 In the second state, the first interface 41 is connected to the fourth interface 44, and the second interface 42 is connected to the third interface 43 (as shown in FIG. Figure 2 , the valve stem 45 rotates until the valve core is in the dotted line position).

[0058] Preferably, a flow meter is provided on the pipeline connecting the water supply tank 14 to the third interface 43, a variable frequency pump 121 is further connected to the pipeline connecting the first heat exchanger 12 to the water supply tank 14, a water pump 132 is connected to the heating pipe 131, and a temperature sensor is provided in the water supply tank 14;

[0059] Accordingly, in the accommodation area heating system based on distilled exhaust steam provided in this embodiment, the hot water delivered to the radiator 2 by the second heat exchanger 13 is not only used for heating the accommodation area, but can also be used for bathing by accommodation area employees after flowing out of the water outlet 22 of the radiator 2 (i.e., during normal heating, the four-way valve is in the first state, and the hot water used for heating circulates through the radiator 2 and the second heat exchanger 13 under the action of the water pump 132. When the employees bathe, the valve stem 45 of the four-way valve is operated to switch the four-way valve to the second state, and some of the hot water returned to the second heat exchanger 13 flows out of the fourth port 44 to the shower head. Under the action of the water pump 132, negative pressure is generated at the second port 42. The negative pressure causes the soft water in the water supply tank 14 to flow through the four-way valve to replenish the cold fluid inlet of the second heat exchanger 13. Obviously, the amount of soft water replenished by the negative pressure is equal to the amount of hot water used for bathing). Accordingly, the water used for bathing by the employees does not need to flow back to the second heat exchanger 13, thereby avoiding heat loss during the process of being transported back to the heat exchanger. It should be understood that the temperature of the hot water used for heating the accommodation area usually drops by about 10°C after dissipation in the radiator 2, so that the temperature of the hot water flowing out of the radiator 2 reaches the water temperature required for bathing (usually greater than 40°C).

[0060] Obviously, after the hot water discharged from the water outlet 22 of the radiator 2 is used for the employees to bathe, the temperature of the water returned to the cold fluid inlet of the second heat exchanger 13 is significantly lower than the original return water temperature (the temperature of the water mixed into the water supply tank 14 is lower). In order to maintain the cold fluid outlet temperature of the second heat exchanger 13, the second heat exchanger 13 requires more heat energy input.

[0061] To this end, in this embodiment, the accommodation area heating system further includes a control terminal electrically connected to the flow meter, the variable frequency pump 121, and the temperature sensor;

[0062] When the four-way valve is in the first state, the control terminal controls the variable frequency pump 121 to supply soft water to the first heat exchanger 12 at an initial flow rate. When the four-way valve is in the second state, the control terminal controls the variable frequency pump 121 to supply soft water to the first heat exchanger 12 at a second flow rate in response to the measurement result of the flow meter and the soft water temperature in the water supply tank 14 detected by the temperature sensor.

[0063] Specifically, the difference between the initial flow rate and the second flow rate is obtained according to the following method:

[0064] ,

[0065] in, ∆q is the difference between the initial flow rate and the second flow rate, q 1is the measurement result of the flow meter, T 1 is the preset inflow temperature of the cold fluid inlet of the second heat exchanger, T 3 is the soft water temperature in the water supply tank, T 4 The preset outflow temperature of the cold fluid outlet of the first heat exchanger.

[0066] Accordingly, this embodiment obtains the cold fluid flow rate that needs to be reduced in the first heat exchanger 12 through the above method, and then adjusts the cold fluid flow rate input to the first heat exchanger 12 accordingly, so that the proportion of waste steam condensed in the first heat exchanger 12 is reduced, and more waste steam enters the second heat exchanger 13 for condensation, releasing sufficient heat energy to heat the return water body whose temperature is significantly lower than that of the water body originally returned to the cold fluid inlet of the second heat exchanger 13 to the preset second heat exchanger 13 cold fluid outlet temperature, thereby ensuring that when the hot water discharged from the water outlet 22 of the radiator 2 is used for employees to bathe, it does not affect the heating effect of the accommodation area.

[0067] Example 3:

[0068] like Figure 3 、 Figure 4 As shown, this embodiment is based on embodiment 1, except that, in this embodiment, the hot fluid outlet of the first heat exchanger 12 is lower than the hot fluid inlet, the hot fluid outlet of the second heat exchanger 13 is lower than the hot fluid inlet, and both ends of the pipeline connecting the hot fluid outlet of the first heat exchanger 12 to the hot fluid inlet of the second heat exchanger 13 gradually sink toward the middle, and a float valve is installed at the lowest point of the pipeline;

[0069] The float valve includes a shell 51 and a float 52. The float 52 is slidably arranged in the shell 51 along the vertical direction, and a drain outlet 53 is provided at the bottom of the shell 51. When the float 52 floats, the drain outlet 53 is opened, and when the float 52 sinks, the drain outlet 53 is closed.

[0070] As a result, the condensed water generated by the condensation of waste steam in the first heat exchanger 12 and the second heat exchanger 13 can be smoothly discharged from the hot fluid outlet, thereby avoiding the accumulation of condensed water in the hot fluid channels of the first heat exchanger 12 and the second heat exchanger 13, which causes the waste steam to circulate poorly, or even the occurrence of water hammer. The two ends of the pipe connecting the hot fluid outlet of the first heat exchanger 12 to the hot fluid inlet of the second heat exchanger 13 gradually sink toward the middle, and a float valve is installed at the lowest point of the pipe, which can discharge the condensed water in the pipe while preventing the waste steam from leaking out. Obviously, the condensed water can stay below the float 52 that is vertically slidable in the shell 51.

[0071] Preferably, the accommodation area heating system further comprises a condenser 16 , and the hot fluid outlet of the second heat exchanger 13 and the drain port 53 are both connected to a hot fluid pipe 161 of the condenser 16 ;

[0072] One end of the cold fluid channel 162 of the condenser 16 is connected to the water supply tank 14 , and the other end is connected to the cold fluid inlet of the first heat exchanger 12 .

[0073] Thus, the condensed water output from the first heat exchanger 12 and the second heat exchanger 13 can be used to preheat the soft water input to the first heat exchanger 12, thereby further improving the utilization rate of the heat energy contained in the waste steam discharged from the distillation.

[0074] Preferably, the condenser 16 is a serpentine condenser 16 (such as Figure 4 As shown, the hot fluid pipe 161 is spiral, with a tubular cold fluid channel 162 sheathed around the spiral hot fluid pipe 161. The condenser 16 is positioned horizontally, below the drain outlet 53 and the hot fluid outlet of the second heat exchanger 13. This allows condensed water discharged from the drain outlet 53 and the hot fluid outlet of the second heat exchanger 13 to flow under gravity into the spiral hot fluid pipe 161 and fully exchange heat with the soft water entering the cold fluid channel 162 of the condenser 16.

[0075] Example 4:

[0076] like Figures 5 to 7 As shown, this embodiment is based on embodiment 1, except that, in this embodiment, an impeller 23 is installed inside the end of the heating pipe 131 close to the radiator 2, and the shaft 24 of the impeller 23 is perpendicular to the axis of the heating pipe 131 and extends to the outside of the heating pipe 131;

[0077] The radiator 2 includes a fixed bracket 25, a heat dissipation pipe 26, and a fan blade 27 rotatably mounted on the bracket 25;

[0078] The air outlet side of the fan blade 27 faces the heat dissipation pipe 26;

[0079] The shaft 24 and the rotation axis of the fan blade 27 are parallel, and the shaft 24 drives the fan blade 27 to rotate through a chain drive.

[0080] Specifically, if Figure 5 、 Figure 6 、 Figure 8As shown, a sprocket 71 is fixedly mounted on the shaft 24 and the rotating shaft of the fan blade 27, respectively, and a chain 72 is mounted on the two sprockets 71. Preferably, the sprocket 71 on the shaft 24 is smaller than the sprocket 71 on the rotating shaft of the fan blade 27 (specifically, the number of teeth on the sprocket 71 on the shaft 24 is less than the number of teeth on the sprocket 71 on the rotating shaft of the fan blade 27). Therefore, using the sprocket 71 with fewer teeth as the driving wheel can make it easier to drive the fan blade 27.

[0081] It should be understood that the main function of the fan blades 27 is to promote air circulation in the heat dissipation pipe 26 by rotating, blowing out the hot air at the location of the heat dissipation pipe 26, and also blowing cold air to the heat dissipation pipe 26, thereby promoting uniform indoor temperature, and also making a large temperature difference between the heat dissipation pipe 26 and the air near it, thereby achieving higher heat conduction efficiency; a water pump 132 is provided on the heating pipe 131 to push water from the second heat exchanger 13 to the radiator 2, and the structure of the impeller 23 (such as Figure 6 As shown, the passage of water inevitably causes impeller 23 to rotate, which in turn drives blades 27, which in turn rotate. This rotation of blades 27 promotes air circulation in heat dissipation pipe 26. Obviously, a high-power water pump 132 can be installed to achieve a certain rotation speed for blades 27, enhancing the cooling effect. Furthermore, heating pipe 131 should be sufficiently strong to prevent bursting due to the localized high pressure generated by water pump 132.

[0082] Accordingly, the blowing action created by the rotation of fan blades 27 allows forced convection heat exchange between heat dissipation pipe 26 and the air within the predetermined space of the accommodation area, thereby achieving a more uniform temperature distribution within the predetermined space and improving the heating effect. Furthermore, the water flow in heating pipe 131 drives the rotation of impeller 23 (which is fixedly connected to shaft 24), which in turn drives the rotation of fan blades 27 using the rotating shaft 24. This eliminates the need for circuitry near radiator 2. Compared to conventional electrically driven fans used to blow heat dissipation pipe 26, even if radiator 2 leaks, this will not cause a short circuit or electric shock.

[0083] More preferably, the heat dissipation pipe 26 is a copper pipe, and a plurality of heat dissipation fins are provided on the side of the heat dissipation pipe 26 facing the fan blades 27 and / or on the side away from the fan blades 27 (the heat dissipation fins are not shown in the accompanying drawings), thereby further enhancing the heat exchange effect between the hot water inside the heat dissipation pipe 26 and the air in the preset space.

[0084] Preferably, the radiator 2 further includes a dust cover 28 fixedly connected to the bracket 25 , and the fan blades 27 are located between the dust cover 28 and the heat dissipation pipeline 26 .

[0085] Accordingly, it is possible to prevent hair, lint, etc. in the preset space from adhering to the heat dissipation pipe 26 due to the rotation of the fan blades 27, thereby preventing the hair, lint, etc. from emitting a burnt smell under the long-term "roasting" effect of the heat dissipation pipe 26, thereby affecting the air quality in the preset space; in addition, it is also possible to prevent hair, lint, etc. from adhering to the surface of the heat dissipation pipe 26 to form a "heat insulation layer", thereby reducing the heat conduction between the hot water inside the heat dissipation pipe 26 and the air in the preset space, and reducing the heating effect.

[0086] Preferably, the radiator 2 also includes a plurality of air guide plates 73, which are located on the side of the heat dissipation pipe 26 away from the fan blades 27, and each of the air guide plates 73 is arrayed along the height direction or width direction of the radiator 2 (in the figure, each of the air guide plates 73 is arrayed along the height direction), and the air guide plates 73 are rotatably connected to the bracket 25.

[0087] Based on this, by manually rotating the air guide plate 73, the direction of the hot air blown out by the radiator 2 can be adjusted, thereby providing a more comfortable heating experience. In addition, the air guide plate 73 can also serve as a scalding shield to prevent the user from being scalded by the higher temperature heat dissipation pipe 26.

[0088] However, as the use time increases, hair, lint, etc. in the preset space will gradually adhere to the windshield, affecting the flow of air and making it difficult to clean. Figure 8 、 Figure 9 As shown, in another specific practice of this embodiment, the radiator 2 further includes a back cover 29 and a water filter; the back cover 29 and the water filter are used instead of the dust cover 28, specifically:

[0089] The back cover 29 is fixedly connected to the bracket 25 and is located on the air intake side of the fan blade 27. The concave side of the back cover 29 faces the fan blade 27, and a chamber is formed between the back cover 29 and the fan blade 27.

[0090] The water filter includes a filter housing 61 and an air inlet pipe 62. Water is contained in the filter housing 61. One end of the air inlet pipe 62 is located outside the filter housing 61, and the other end passes through the wall of the filter housing 61 and is inserted into the water.

[0091] A connection port 63 is provided on the wall surface of the filter housing 61 that is higher than the internal water level. The side of the back cover 29 away from the fan blades 27 is connected to the connection port 63 through a connection pipe 64 .

[0092] It will be understood that one end of the air inlet pipe 62 located outside the filter housing 61 is higher than the liquid level within the filter housing 61. The filter housing 61 includes a cover 611 and a barrel 612. The cover 611 and barrel 612 are threadedly connected (the connection is airtight when connected). The cover 611 is fixedly connected to the bracket 25. The air inlet pipe 62 and the connection port 63 are both provided on the cover 611. Therefore, when it is necessary to replace the water in the filter housing 61, the barrel 612 and the cover 611 are separated, and the water in the barrel 612 is then replaced.

[0093] The rotation of fan blades 27 creates a negative pressure in the chamber between back cover 29 and fan blades 27, forcing air in the predetermined space into the water within filter housing 61 through air inlet pipe 62. After being filtered by the water, the air then enters the chamber through connecting pipe 64. Thus, air directed toward heat dissipation pipe 26 is pre-filtered by the water filter, preventing hair and lint in the predetermined space from adhering to heat dissipation pipe 26. Furthermore, compared to regularly cleaning dust cover 28, cleaning the water filter is much simpler; it only requires replacing the water in the filter.

[0094] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A heating system for an accommodation area based on distillation exhaust steam, wherein the distillation exhaust steam comes from a distillation processing system (11) in a factory area; characterized in that: The accommodation area heating system comprises a first heat exchanger (12) located in the factory area, a second heat exchanger (13), a water supply pool (14), a high-temperature water tank (15), and a radiator (2) located in the accommodation area; The waste steam discharged from the distillation is connected to the hot fluid inlet of the first heat exchanger (12), and then flows out from the hot fluid outlet of the first heat exchanger (12) and connected to the hot fluid inlet of the second heat exchanger (13); The cold fluid inlet of the first heat exchanger (12) is connected to the water supply pool (14), and the cold fluid outlet is connected to the high-temperature water tank (15); The cold fluid outlet of the second heat exchanger (13) is connected to the water inlet (21) of the radiator (2) through a heating pipe (131), and the cold fluid inlet is connected to the water outlet (22) of the radiator (2); The radiator (2) is used to provide heating to the accommodation area; An impeller (23) is installed inside one end of the heating pipe (131) close to the radiator (2), and a shaft (24) of the impeller (23) is perpendicular to the axis of the heating pipe (131) and extends to the outside of the heating pipe (131); The radiator (2) includes a fixedly mounted bracket (25) and a heat dissipation pipe (26), and a fan blade (27) rotatably mounted on the bracket (25); The air outlet side of the fan blade (27) faces the heat dissipation pipeline (26); The shaft (24) and the rotation axis of the fan blade (27) are parallel, and the shaft (24) drives the fan blade (27) to rotate through a chain drive.

2. The accommodation area heating system according to claim 1, characterized in that: The accommodation area heating system further comprises a water softener (17), wherein the water softener (17) is used to soften natural water to obtain soft water and input the soft water into the water supply pool (14); The cold fluid in the second heat exchanger (13) is soft water.

3. The accommodation area heating system according to claim 2, characterized in that: A shower room is provided in the accommodation area, and a four-way valve is provided in the shower room, wherein the four-way valve comprises a first interface (41), a second interface (42), a third interface (43) and a fourth interface (44); The water outlet (22) is connected to the first interface (41), and the second interface (42) is connected to the cold fluid inlet of the second heat exchanger (13); the water supply tank (14) is connected to the third interface (43), and the fourth interface (44) is connected to the shower head; By operating the valve stem (45) of the four-way valve, the four-way valve can be switched between a first state and a second state; In the first state, the first interface (41) is connected to the second interface (42), and the third interface (43) and the fourth interface (44) are closed; in the second state, the first interface (41) is connected to the fourth interface (44), and the second interface (42) is connected to the third interface (43).

4. The accommodation area heating system according to claim 3, characterized in that: A flow meter is provided on the pipeline connecting the water supply pool (14) to the third interface (43); a variable frequency pump (121) is also connected to the pipeline connecting the first heat exchanger (12) to the water supply pool (14); a water pump (132) is connected to the heating pipe (131); and a temperature sensor is provided in the water supply pool (14); The accommodation area heating system further comprises a control terminal electrically connected to the flow meter, the variable frequency pump (121), and the temperature sensor; When the four-way valve is in a first state, the control terminal controls the variable frequency pump (121) to supply soft water to the first heat exchanger (12) at an initial flow rate; when the four-way valve is in a second state, the control terminal controls the variable frequency pump (121) to supply soft water to the first heat exchanger (12) at a second flow rate in response to a measurement result of the flow meter and a soft water temperature in the water supply tank (14) detected by the temperature sensor.

5. The accommodation area heating system according to claim 4, characterized in that: The difference between the initial flow rate and the second flow rate is obtained according to the following method: ， in, ∆q is the difference between the initial flow rate and the second flow rate, q 1 is the measurement result of the flow meter, T 1 is the preset inflow temperature of the cold fluid inlet of the second heat exchanger, T 3 is the soft water temperature in the water supply tank, T 4 The preset outflow temperature of the cold fluid outlet of the first heat exchanger.

6. The accommodation area heating system according to claim 1, characterized in that: The hot fluid outlet of the first heat exchanger (12) is lower than the hot fluid inlet, the hot fluid outlet of the second heat exchanger (13) is lower than the hot fluid inlet, and both ends of the pipeline connecting the hot fluid outlet of the first heat exchanger (12) to the hot fluid inlet of the second heat exchanger (13) gradually sink toward the middle, and a float valve is installed at the lowest point of the pipeline; The float valve comprises a housing (51) and a float (52). The float (52) is arranged in the housing (51) to slide in a vertical direction. A drain outlet (53) is provided at the bottom of the housing (51). When the float (52) floats, the drain outlet (53) is opened, and when the float (52) sinks, the drain outlet (53) is closed.

7. The accommodation area heating system according to claim 6, characterized in that: Also included is a condenser (16); The hot fluid outlet of the second heat exchanger (13) and the drain port (53) are both connected to the hot fluid pipe (161) of the condenser (16); One end of the cold fluid channel (162) of the condenser (16) is connected to the water supply tank (14), and the other end is connected to the cold fluid inlet of the first heat exchanger (12).

8. The accommodation area heating system according to claim 1, characterized in that: The radiator (2) further comprises a dust cover (28) fixedly connected to the bracket (25), and the fan blade (27) is located between the dust cover (28) and the heat dissipation pipeline (26).

9. The accommodation area heating system according to claim 1, characterized in that: The radiator (2) further includes a back cover (29) and a water filter; The back cover (29) is fixedly connected to the bracket (25) and is located on the air intake side of the fan blade (27), the concave side of the back cover (29) faces the fan blade (27), and a chamber is formed between the back cover (29) and the fan blade (27); The water filter comprises a filter housing (61) and an air inlet pipe (62), wherein water is contained in the filter housing (61), one end of the air inlet pipe (62) is located outside the filter housing (61), and the other end thereof passes through the wall of the filter housing (61) and is inserted into the water; A connection port (63) is provided on the wall surface of the filter housing (61) above the internal water level, and a side of the back cover (29) away from the fan blades (27) is connected to the connection port (63) via a connection pipe (64).

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